public override void SaveChanges()
{
foreach (var artist in Artists)
{
if (artist.Id == 0)
{
artist.Id = Artists.Max(x => x.Id) + 1;
}
}
foreach (var album in Albums)
{
if (album.Id == 0)
{
album.Id = Albums.Max(x => x.Id) + 1;
}
}
foreach (var track in Tracks)
{
if (track.Id == 0)
{
track.Id = Tracks.Max(x => x.Id) + 1;
}
}
}